Foreword. The Interrelationship between Irrigation, Drainage and the Environment; M.G. Bos, R. van Aart. Environmental Benefits of Reducing Collector-Drain Runoff and Ways to Improve Irrigation Water Quality in the Rivers of the Aral Sea Basin; V. Berdjansky, I. Zaks. Planning for Drainage Development in the Aral Sea Basin; W.J. Ochs, L.K. Smedema. Impressions and Findings of a Study Tour to Karakalpakia in Central Asia; P. Wolff. Drainage Development in the Arid Zones of Central Asia; V. Dukhovny. Choice of Envelope Materials for the Rehabilitation of the Drainage Network in Uzbekistan; N. Goroshkov, A. Galustyan. The Construction and Effectiveness of Combined Drainage Systems; P. Umarov. The Contribution of Horizontal Subsurface Drainage to Solving the Aral Sea Economic and Environmental Problem; D.B. Chalcroft. Flow Through Wetlands of Horizontal Subsurface Drainage in Rice Irrigation Systems of Kazakhstan; A.A. Dzhumabekov. Environmental and Economic Benefit of Subsurface Horizontal Drainage Construction; V. Berdjansky, V. Berdjansky. Improving Drainage Water Quality by Constructing Wetland Ecosystems in the Catchment Area of the Amu Darya, Aral Sea Region; P. Veen, A. Krutov. Irrigation Systems, Water Use Efficiency and Environmental Impacts; I. Papadopoulos; Measures to Increase the Efficiency of Irrigated Lands in Kyrghyzstan; I. Duyunov. The Use of Decision Support Systems in Water Management; J.R.A. Sweerts, P.C.G. Glas. Conjunctive Water Management for the Aral Sea Basin; L.S. Willardson. Drainage Problems and Solutions in the San Joaquin Valley of California, U.S.A.; J.C. McGahan. The Use of Specific Environmental Publications for Local Capacity Building for Irrigation and Drainage Projects within the Aral Sea Basin; T.C. Dougherty. Irrigation and the Environment of the Aral sea Basin; an Annotated Bibliography; L.A. Trouw.